User's Manual

Phone from TCU applic to the phone using AT commands
19 PHONE_RST
Phone Reset gnerated
by the application
High I
The application can reset the phone
module by pulling down
20 SPK_OUT_PHO
NE
Speaker low level audio
Output to TCU from
Phone
TBD O TBD
21 GND Ground Low O System ground
22 MIC_IN_PHONE
Microphone low level
Audio input to Phone
from TCU
TBD I TBD
23 GND Ground Low O System ground
24 PCM_IN
PCM Audio Input to the
Phone from TCU
Low I
PCM IN provides the and data
information f the TCU application t phone
25 GND GND Low O System ground
26 PCM_OUT
PCM Audio Output from
the Phone to the TCU
High O
PCM OUT provides v and data
information f the phone to the appli
27 GND GND Low O System ground
28 PCM_CLK
PCM Audio Clock
Generated by the Phone
Low O
PCM CLK provides v and data
information f the phone to the appli
29 PCM _SYNC
PCM Audio Sync
Generated by the Phone
Low O
PCM sync indicate the signal when it is
high
30 GND GND Low O System ground